https://spiceworks.com
Sustainability
· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
72
GRADE
C
FIX
2
REVIEW
1
PASS
3
INFO
0
Checks
63 PASS 1 REVIEW 2 FIX
DCO2 Per Page LoadAction1.31g CO2 per viewFIX
CO2 Per Page Load
Action1.31g CO2 per view
1.31g CO2 per view
Warning::
1.31g CO2 per page view
This page transfers 5.5 MB, producing an estimated 1.31g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.03g, network 0.27g, end-user device 1.01g.
Got: 1.31g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 157.3 kg CO2/year
With 10,000 page views per month, this page would generate approximately 157.3 kg of CO2 annually — equivalent to charging 19656 smartphones.
Info::
Green hosting reduces data center emissions
1.31g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 30% of websites
Sustainable Web Design model v4 · Page size: 5.5 MB
Your site
1.31g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.03g
Network
0.27g
End-user device
1.01g
At 10,000 monthly views: Monthly: 13.1 kg · Annual: 157.3 kg · ≈ 19656 smartphone charges
DCarbon BudgetAction70th percentileFIX
Carbon Budget
Action70th percentile
70th percentile
Warning::
1.31g CO2 — above the median website (0.60g)
Heavier than an estimated 30% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 70th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
1.31g
70th percentile
Cleaner than 30% of websites
✗ Above the median website
vs Median 118% more
vs Target 162% more
CTransfer EfficiencyAction71% efficientREVIEW
Transfer Efficiency
Action71% efficient
71% efficient
Warning::
Transfer efficiency: 71%
An estimated 1623 KB (29%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 1623 KB of unused JavaScript. This wasted data produces 0.38g of unnecessary CO2 per page view.
Total waste: 1623 KB (29% of page weight)
Unused JS 1623 KB
0.38g unnecessary CO2 per visit
Actual transfer 5669 KB
Theoretical minimum 4045 KB
Potential savings 1623 KB (0.38g CO2)
See Deep Analysis sections above for specific optimizations.
A+Green HostingGreen (both)PASS
Green Hosting
Green (both)
Green (both)
Info::
Both hosting and CDN use renewable energy
Got: Hosting: Cloudflare, CDN: Cloudflare
Info::
Cloudflare: Verified by the Green Web Foundation
Info::
Cloudflare: 100% renewable energy for global network since 2019
Info::
Green hosting status based on known provider commitments
Green hosting detection uses a curated database of provider renewable energy commitments. This is not a real-time verification. For authoritative checks, visit thegreenwebfoundation.org.
Green Hosting✓ Green Hosted
Hosting Cloudflare✓CDN Cloudflare✓
Cloudflare: Verified by the Green Web Foundation
Cloudflare: 100% renewable energy for global network since 2019
Based on known provider commitments. Verify at thegreenwebfoundation.org
A+Repeat Visit Weight95% cachedPASS
Repeat Visit Weight
95% cached
95% cached
Info::
95% reduction on repeat visits
Returning visitors download only 271 KB (vs 5669 KB first visit). 195 of 200 resources are served from browser cache, saving 1.25g CO2 per repeat visit.
Info::
Repeat visit: 0.06g CO2 (first visit: 1.31g)
First visit
5669 KB
Repeat visit
271 KB
95% reduction on repeat visits
Saving 1.25g CO2 per returning visitor
195 resources served from cache · 5 resources re-downloaded
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
Whether the site is served from green-energy infrastructure
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.